The invention discloses a grinding wheel positioning adjusting device of an automatic band saw sawtooth processing device. The grinding wheel positioning adjusting device comprises a grinding system with a grinding wheel and a grinding wheel drive motor, a work framework for installation of the grinding system and a band saw and a drive motor which is installed on the work framework and used for driving the grinding system. The grinding system is installed on the work framework through an adjusting base for adjusting the angle and the height of the grinding wheel. The height and the angle of the grinding wheel of the grinding system can be adjusted at will through the adjusting base so that the grinding wheel can be suitable for band saws of all specifications, and the application range of the automatic grinding device is greatly extended. The installed adjusting device cannot influence normal moving of a push rod, compared with an original connection mode, the grinding wheel positioning adjusting device improves stability of the grinding system and reduces load of the push rod and load of a power system due to the fact that a fixing base is connected with the grinding system and the push rod, and due to the fact that the adjusting device is installed on the work framework, the whole automatic grinding device is more stable.